Application of statistics questions | form three Geography

Josi and Losi are selling school bags. They always record data of their retailing in a notebook. Their friend Kosi is working in a supermarket as a storekeeper and she told them about the simplest way of presenting data for a single variable against time. Kosi showed her friends the
following table showing data of school bags received from 2001 to 2007.

1. Name the two simplest ways of presenting the data.
2. Explain five advantages of presenting the data by simple methods mentioned in (a).
3. Present the given statistical information by using simple graph.

1. Define compound bar graph.
2. Study carefully the table below on hypothetical data about cash crops production (in `000 tonnes) in East Africa in the year 2000, then answer the questions that follow.

1. Draw compound bar graphs to represent the data provided.
2. Outline four merits of using compound bar graph.

1. Define​ ​ simple​ ​ divided​ ​ circle.
2. Give​ ​ four​ ​ merits​ ​ of​ ​ using​ ​ simple​ ​ divided​ ​ circle.

Carefully​ ​ study​ ​ the​ ​ bar​ ​ graph​ ​ presented​ ​ below​ ​ showing​ ​ production​ ​ of​ ​ crops​ ​ in​ ​ tonnes (“000”)​ ​ from​ ​ Ujamaa​ ​ village​ ​ in​ ​ 2010,​ ​ and​ ​ then​ ​ answers​ ​ the​ ​ questions​ ​ that​ ​ follow.

1. Draw​ ​ the​ ​ above​ ​ bar​ ​ graph​ ​ to​ ​ a ​ ​ simple​ ​ divided​ ​ circle​ ​ by​ ​ showing​ ​ all​ ​ the procedures.
2. Give​ ​ two​ ​ possible​ ​ factors​ ​ for​ ​ variation​ ​ of​ ​ crops production​ ​ in​ ​ the​ ​ above​ ​ bar​ ​ graph provided.

1. What is a line graph?
2. List down the main types of line graphs.
3. Construct a line graph to show the trend of coffee production in Tanzania from 1970–1974 as shown in the table below:

Study the following data showing the production of Irish Potatoes in a thousand (“000”) tones in three villages in Tanzania from 2000 to 2002, then answer the questions that follow:

1. Construct a compound bar graph to show the production of Irish potatoes in the three villages.
2. Give three advantages and two disadvantages of the compound bar graph.
3. Suggest any other methods which could be used to present the data provided in the table.

Carefully study the data in the table below showing importation of motor vehicles from Europe in 2009, and answer the questions that follow:

1. Draw a divided circle to represent the data.
2. Show the disadvantages of the method you have used in (a) above.

1. Classify the nature of geographical data.
2. The Geography teacher at Mtakuja secondary school  obtained the following scores after marking annual examination of his students:
   36, 43, 48, 68, 70, 19, 49, 30, 51, 18, 51, 58, 72, 51, 61,  43, 51, 26

1. Find the median of the scores.
2. Calculate the arithmetic mean
3. Determine the mode of the scores.

3. Show the significance of the arithmetic mean in geographical data.

Briefly explain the following types of data:

1. Individual data
2. Grouped data
3. Discrete data
4. Continuous data

Explain the importance of studying statistics.